Rubber-stamp base



Nov. 30 1926.

` M. L. WILLARD RUBBER STAMP BASE Filed Nov. 4, 1925 ll'lvlllEll v STATES EAURICE L. VIILLARD, OF CHICAGO, ILLNOIS,

ASSIGNOR TO THE SUIPEROR TYE CGMPANY', OF CHICAGO. IL'LNGS, A 'CRPORATION OF ILLL'NOIEL RUBBER-STAMP BASE.

Application tiled November 4,1925 Serial No. 66,689. i

rlhis invention relates to a neiv and improvedrubber stamp cushion construction and more particularly, to such a `cushion having retained therein a substantially rigid type `holding member.

ll'vith certain types ot rubber stamps vhaving cushioned bases it is desirable to provide means :tor holding removable type in association Wit-h the remainder ot such stamps. rI'Chls combination is particularly desired in order to print a date which may be varied by means ot interchangeable type.; in combination With other Wording which remains permanently upon the stamp.

Attempts have heretofore been made to provide means for retaining type in cushion for forming a cavity in the cushion. the cavity Walls being of harder rubber than the remainder oi' the cushion. This has been diiiicult because ot the inability to secure hard and sott rubbers which vulcanize as a unit at the same heat. Also, such a hard rubber type retaining cavity does not maintain its dimensions in use and this is essential as the removable type must be gripped iirmly.

It is an object of the present invention to provide a rubber stamp cushion having a substantially rigid type holding member positively secured thereto.

lt is a further object to provide a combination of this character in which t-he type holding member is removably retained in the cushion.

It is also an object to provide such a combination in which the type holding may be formed ot metal whereby it will permanently retain its shape and grip upon the type held. w

It is a still further objectl to provide a construct-ion in which the substantially rigid type holding member is cushioned upon its lower side by the cushion in which it is carried.

Other and further objects will appear as the description proceeds.

I have illust-rated certain preferred forms of my invention in the accompanying drawinp's in Which- Figure 1 is a plan view of one form ot construction,

Figure 2 is a section taken on line 2*2 ot Figure 1,

Figure 3 is a section taken on line 3 3 ot Figure 2,

Figure 4 is a view similar but .showing a modiiied form tion,

Figure 5 is a section taken ot Figure e,

Figure 6 is a sectiontalten of Figure 5` Figure 7 is a view similar to Figure l, but showing a further modified form",

Figure 8 is a section taken on line 8-8 of Figure 7, and

Figure 9 is a section taken on line 9--9 t Figure 8.

Referring iirst to the form oi construction shown in Figures l. to formed ot sott or sponge rubber and has 'formed therein the cavity 12 which receives the type holding member 13. This member has tli'e ends ot its bottom provided with to Figure 1 of construe on line 5--5 the extensions ll which underlie the end Walls of the cavity 12 and retain the member removably in place in the cushion.

In the form of construction shown in Figures lto 6, the cushion 1G has the cavity 17 in which is iitted the type retaining member 18 Which has the laterally projecting eX- tensions i9 in the plane of its base. As clearly shown in Figure 6, these extensions 19 underlie part of the side Walls ot the cavity in the cushion and removably retain the member' in place in the cushion.

The form of construction shown in Figures to 9 comprises the cushion 21 having the cavity 22 into which is fitted the type holding member 23. The ends of the member 23 have the extensions 24 which underlie the end Walls of the cavity. As a further means of retaining the member 23 in place, the sides ot the cavity are provided with lips 25 which overlie the top edges of the member 23 as clearly shown in Figure 9. These lips 25 also cushion the edges ot the type holding member When the rubber stamp is in use.

In all of the forms shown the cushion is molded separately from the type holding member and the latter is inserted after the cushion has been vulcanized. T he type holding members may be formed of sheet steel and will permanently retain their shape and their ability to securely hold rubber type.

l have shown certain preferred forms ot my invention but it is capable of further modiiioation and l contemplate such fur- 3, the cushion 11 lill:

lle

ther changes and modifications as come Within the spirit and scope of the accompanying claims.

I claim 2# 1. A cushion for rubber stamps, a cavity formed therein, certain of the cavity Walls being undercut, and a, substantially rigid type-holding,` member having portions thereof fitting under the undercut cavity Walls whereby the type-holding` member is removably reta-ined in the cushion cavity.

2. A cushion for rubber stamps, a cavity Jormed therein, lips overhanging the sides of the cavity, and a substantially rigid typeholding member fitted in said cavity, said member being U-shsiped in cross section und the lips on the cavity Walls overlying the top edges of the legs of the U.

3.V A resilient rubber cushion for rubber stamps, a cavity formed therein, and a sheet metal type-holding member, extensions upon the bese of the typeeholding member, the member being iitted into the cavity and the extensions removably reteining it in place.

4. A resilient rubber cushion for rubber stamps, e cavity formed therein, and :i sheet metal type-holding member, extensions upon the base of the type-holding member, the member being fitted into the cavity and the extensions removably retaining it in place and a. portion of the cushion extending; belowY the base o the type-holding member'.

Signed at Chicago.A lllinois, this 28th day ot' October, 1925.

M. L. VILLARD 

